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Harmful Algal Blooms (HABs) Archive Page

Waterbodies with Suspicious or Confirmed HABs that were reported earlier in 2018 are listed in the table below. Listings are added to the Archive table when a HAB is reported to be no longer visible or no new information was available to update the listing for three consecutive weeks. Waterbodies with current bloom notifications are listed on the HABs Notifications page. Multiple listings for a single waterbody may indicate that bloom conditions change frequently. Blooms may return on any of the waterbodies listed below.

Lake Champlain blooms are not reported here; this information can be found on the Vermont Department of Health's blue-green algae notification page.

Waterbodies with Archived HABs Notices
Waterbody Name County Last Update Detail
Chautauqua Lake Chautauqua 5/29/18 Bloom reported to have ended
Honeoye Lake Ontario 6/11/18 Bloom reported to have ended
Lake Casse Putnam 6/14/18 Bloom reported to have ended
Lake Mahopac Putnam 6/14/18 Bloom reported to have ended
Lake Neatahwanta Oswego 5/22/18 Bloom reported to have ended
Plymouth Reservoir Chenango 6/14/18 Bloom reported to have ended
Putnam Lake Putnam 6/4/18 Bloom reported to have ended
Quaker Lake Dutchess 6/8/18 Bloom reported to have ended
Roaring Brook Lake Putnam 5/31/18 Bloom reported to have ended

Archived Notices

The following reports summarize notifications that were listed on the HABs Notifications page in past seasons:

Lake Champlain blooms are not reported here- this information can be found on the Vermont Department of Health's blue-green algae notification page (link leaves DEC website.)

Anyone using a waterbody is advised to avoid direct contact with any discolored water and to report suspected HABs conditions to DEC by submitting a Suspicious Algal Bloom Report Form (PDF, 764 KB) or by contacting your regional DEC office or by calling 518-402-8179.